12102211109 has 4 divisors (see below), whose sum is σ = 12125351616. Its totient is φ = 12079070604.

The previous prime is 12102211103. The next prime is 12102211129. The reversal of 12102211109 is 90111220121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90111220121 = 13 ⋅6931632317.

It is a cyclic number.

It is not a de Polignac number, because 12102211109 - 2²⁰ = 12101162533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102211103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11569469 + ... + 11570514.

It is an arithmetic number, because the mean of its divisors is an integer number (3031337904).

Almost surely, 2^12102211109 is an apocalyptic number.

It is an amenable number.

12102211109 is a deficient number, since it is larger than the sum of its proper divisors (23140507).

12102211109 is an equidigital number, since it uses as much as digits as its factorization.

12102211109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23140506.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 12102211109 in words is "twelve billion, one hundred two million, two hundred eleven thousand, one hundred nine".